• at 20 weeks of age, synovia and periarticular and peritendinous connective tissues are infiltrated by low to moderate number of macrophages and neutrophils, frequently affecting coxofemoral, tibiofemoral, and invertebral joints, and knee tendons; more common in female mice

• at 20 weeks of age, synovia and periarticular and peritendinous connective tissues are infiltrated by low to moderate number of macrophages and neutrophils, frequently affecting coxofemoral, tibiofemoral, and invertebral joints, and knee tendons; more common in female mice